Machine-translated by Google. Questions are authored in English.
Top

Discussion

Match the substances in column A with their chemical names in column B.

(A)(B)
(a) Slaked lime(i) Calcium oxide
(b) Table salt(ii) Sodium bicarbonate
(c) Limestone(iii) Calcium carbonate
(d) Caustic soda(iv) Calcium hydroxide
(e) Quick lime(v) Sodium hydroxide
(f) Baking soda(vi) Sodium chloride

  • A.(a)-(iv), (b)-(vi), (c)-(iii), (d)-(v), (e)-(i), (f)-(ii)
  • B.(a)-(vi), (b)-(ii), (c)-(v), (d)-(i), (e)-(iii), (f)-(iv)
  • C.(a)-(i), (b)-(vi), (c)-(iii), (d)-(v), (e)-(ii), (f)-(iv)
  • D.(a)-(iv), (b)-(v), (c)-(iii), (d)-(ii), (e)-(i), (f)-(vi)

Answer: A

The correct matching is (a)-(iv), (b)-(vi), (c)-(iii), (d)-(v), (e)-(i), (f)-(ii).

  • Slaked lime: calcium hydroxide, Ca(OH)2.
  • Table salt: sodium chloride, NaCl.
  • Limestone: calcium carbonate, CaCO3.
  • Caustic soda: sodium hydroxide, NaOH.
  • Quick lime: calcium oxide, CaO.
  • Baking soda: sodium bicarbonate, NaHCO3.

The common confusion is between quick lime (CaO) and slaked lime (Ca(OH)2), formed when quick lime is 'slaked' with water; options C and D mix these or the sodium compounds.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.

Subject Categories

Examination Categories

About Us

ExamsRepo

Copyright © 2026 ExamsRepo . All Rights Reserved . With